Angle drilling and tapping device



Ap 7, 1953 c. SPERLING ANGLE DRILLING AND TAPPING DEVICE 2 SHEETSSHEET 1 Filed July 28, 1950 L h :/@e@

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I N VEN TOR. (War/es Spar] ATTEI RN EYE April 7, 1953 I c. SPERLING 2,633,763

ANGLE DRILLING AND TAPPING DEVICE Filed July 28, 1950 2 SHEETS-SHEET 2 I N VEN TOR.

fiar/es 8p erZz'ny 8' @a ma o ATTD RN EYS Patented Apr. 7, 1 953 OFFICIE 2,633,763- ANGLEDRH-LLING- AND TAPPING DEVICE? forming oblique openings-sin variousparts of the work pieoessuohcas the hubs thereof for thereception of set screws.

Another object is to provide a jig Ian-fixture for holdin'g ro'und workipi'eoes. which a can be adjustedztovvariouaangular positions with respect to the drill spindle. axisto permit the drilling and-tappingof oblique openings in: planes normal to as. well. as longitudinally 'of' the. work piece axisa r 7 Another object is toprovide a jig or fixture .for holdingwvorhpieoes which. can be quickly and easily adjusted by means. oi a screw threaded manually operated actuator used in ,conjunotion witha graduated protrac'torscale arranged-to indicate various angular positions ofthe-work-holdtl ieure 2 is a mp elevational. view showing the manner -in which thethread'e'd. actuator rod is I conneeted-to theadj ustable support and the.nian-' ni' which. the actuating. sleeve is trunnioned on the base.

,uEigureB. is awiront elevational view of the, jig or ffixture showing the adjustable supporting plateand' themanner in which the work holder is arranged thereon.

Figure {is a rear elevational view showing the 'manually operable control" member for. moving the supportingplate to various angular positions. f Figure "5 is a'longitudinal orossseetional view takenon line -5-5"of Figure 2andlooking'in the direetion-of the-arrows' toillustratVariou-s structuraldetails.

-"Figure fi is a side "elevational view similar to Figure 1 but showing the supporting plate and work holder. adjusted :to an angular position. not

.approximately fi degrees.

ulFigureafllisi azreai elevatlonahaview 015 33118 supportingsplatefshowing. the collar; thereon: fortre- STATES PATENT 7 V ,7 Charles Sperling', '(lamden, N. J.

Q I Application July 28', 1950 Serial N0. 176,431

ceiving work holding shaftsof various:diame ters.

Figure 8' is an'endlelevationa-l view of thenlanuallybperable screw shaft actuator sleeve.

Figure 9 is an edge elevational view-of one: 01*. the trunnion brackets for supporting the trun nion sleeve shown in Figure S, and

Figure 1-0 isa side elevatienal view,-simi1ar to that shown in Figured showing an- -angle attached to the supporting plate for providinga sl'lapes w the-drawings, and moresin detai l there is shown for the purpose of convenience 0t illus trationa base generallyoesignated 5 including ajehannebshaped member having a hat plate. 5 and side flanges I. "The plate like portion 16 is provided with elongated" openings t tl igure i5.) to reoeive the' holundown bolts (not shown) .on'. the bed-of a drillpress or the "like. The: bed of the drill press (also not-shown): usually-isprovided with aseries of spaced apart undercut slots' for receiving the heads: of two: or more hold. down bolts-which are used for holding workpieces, the openings ssarearranged' linspaeecl apart relation a pi e-determined distance tmfaci'litate reception. of "thezholdsdown bolts;

Aflixedito the side flanges 1 atoneend of the base fisislaa pair of vertical bracketsfi which may be held inuplaceiby being welded. to said flanges 1,..andtheupper.portions of the brackets are rounded ;.as vat. liltand. are markedasat H to provide: '-'a. .z'ero. .to degree protractor =soa1e. Eaohiof. the brackets L9 is provided: withanuopenr ins 11:2: in its upper. end for receivinga. bearin rod 173 whioh is heldiin place by z-cotter keys-or the; likezzas'at 1 41,, androokably mounted on said bearing rod: is a supporting plate 15 having side flanges :15 provided with .al-ined openin s H for reeeiving "the. bearing rod it. Thus, the 5UP." porting plate can rockiifroma vertical position about-the axis ,of. :the bearing. rod- 13 through an angular :distance of approximately 90 degrees. @hedowenedges-of the sideflanges -.l Gare-rounded as at 18- topermit theroolzina movement of the supporting. plate 1-5: in one: direction from it vertical position. The lower-ed e of the: supportingplate contaotuallyengagesfthe upperzsur tace of :the; plate-like portion; fi of the base '5 when-thesupporting plate is.- inra' vertical position to-li-mit rocking movement of said. supportplatein the opposite direction. 1 L iFormedin: thesupporting plate 45 1s an'bpenmg zeawhich issurroundedsby aooilarzlwwelded 01!. sotherwise selcured stout-he rear'yface of. the-suppetting.ip1ate;j&nd ;$aid1691-1241 is provided with a pair of internally screw threaded bores 22 arranged in circumferentially spaced apart relation approximately 90 degrees for receiving correspondingly threaded set screws 23. The central opening 24 in the collar 2| is in alinement with the opening 20 for receiving a round work holder shaft 25. The work holder shaft 25 is of round section and of a suitable diameter to receive various round work pieces such as collars, gears, pulleys and the like. The opposite end of the work holding shaft 25 is provided with an internally threaded bore 26 for receiving a clamping screw 21 which passes through an eccentric opening 28 in a work clamping disk 28.

Secured to the rear face of the work holding support I is a pair of spaced apart brackets 30 which are held in place by bolts 3| and retaining nuts 32, and the angular portions 33 of said brackets are arranged in .parallel spaced apart relation. Each of the angular portions 33 of the brackets 30 are provided with alined bearing openings 34 (Figure 7) for receiving a pivot pin 35which is held in place by cotter keys or the like 36, and pivotally mounted on said pivot pin is the T head 31 of a screw threaded actuator shaft 38. The T head 37 is provided with a bore 39 of substantially the same diameter as the pin 35, and longitudinal movement on said pin is prevented by the angular portions 33 of the angle brackets 30.

In order to change the angular position of the supporting plate IS, the screw threaded shaft 38 is threaded throughout the greatest portion of its length as at 40, and is adapted to be controlled by manually operable mechanism located at'the other end of the base 5. The manually operable mechanism includes a journal collar 4| having trunnion pins 42 threaded in diametral openings 43 (Figure 8). The journal collar 4| is mounted between trunnion brackets 44 which have their lower angular flanges 45 bolted to the base 5 as at 46. Retaining nuts 41 are threaded on the bolts 46 to securely anchor the trunnion brackets 44 in place. Each trunnion bracket 44 is provided adjacent its upper end with a bearing opening 48 for receiving the trunnion pins 42. Thus, the journal collar 4| may rock about the axis of the trunnion pins 42. Rotatably mounted within the journal 4| is a sleeve 50 which'is held in place by locking collars 5| on each end thereof and arranged in abutting relation with the radial end walls of said journal collar 4|. Set screws 52 are provided for looking the collars 5| in position. One end of the rotatable sleeve 50 has welded or otherwise affixed thereto a nut 53 having a threaded internal bore 54 corresponding to the diameter and pitch of the threads 40 on the shaft .38. Thus, as the actuator sleeve 50 is rotated the screw threaded rod 38 will feed into and out of said sleeve. In order to rotate the sleeve 50 a hand wheel 55 has its hub 56 secured to one free end of said actuator sleeve as indicated in Figure 5.

Welded or otherwise affixed to the actuator sleeve 50 isa tubular member 51 into which an elongated vise handle may be inserted to facilitate turning the sleeve 50.

In operation, the base 5 is bolted to the bed of a drill press and secured thereto by the hold down bolts. The work piece W is mounted on theshaft 25 and the hub I-I of the work piece W is clamped on the shaft 25 by means of the clamping disk 29. The shaft 25 is adjusted in a predetermined position depending upon the length of the axis of the work piece W by manipulating the set screws 23. Thus, the work 4 piece W which may be a gear or other round object may be securely clamped on the shaft 25 between the outer face of the supporting plate I5 and the inner face of the clamping disk 25. After the work piece W has thus been placed in position, thehand wheel 55 is then manipulated such that a marking as for instance an indicator pointer P, printed or otherwise marked on the side flanges l6 of the supporting plate I5, is brought into registry with a predetermined scale marking on the protractor dial After the pointer marking P has thus been positioned with respect to the protractor scale II, it will be found that the work piece W is presented to the drill of the drill press at the desired predetermined angle for drilling an oblique opening in the hub H which later may be tapped to provide internal threads for receiving a set screw.

It is to be understood, that by simply displacing the base 5 an angular distance of degrees about the drill spindle axis, oblique openings or bores can be formed in round work pieces inanother plane. Primarily, the fixture is intended for use in supporting gears, pulleys and similar round work pieces havinga hub which is to be drilled and tapped for receiving a set or looking screw.

When the fixture is used for round work or for work of other shapes the supporting plate I5 is provided with an angle 60 which is secured thereto by bolts 6| and the angle provides a V- shape work holding socket.

I claim:

i. In a work supporting fixture, a base adapted to be afllxed to the bed of a drill press, a plate rockably mounted at one end on said base in side flanges adjacent one end thereof, work supporting and clamping means on the upper face of said plate adapted to hold a piece of work in position beneath the tool of said drill press and manually operable means connected to the end of the plate opposite to the said one end for adjusting said plate to various angular positions mounted on the upper face of said base adjacent the opposite end thereof.

2. In a work supporting fixture for a drill press, a base adapted to be affixed to the bed of said drill press, a work supporting base rockably at one end mounted on the upper face of said first base inside flanges adjacent one end thereof, work supporting and clamping means on said work supporting base adapted to present a piece of work beneath the tool of said drill press, a threaded actuator shaft connected to said work supporting base on the opposite face thereof adjacent the opposite end of said base to the end opposite to the said one end and a manually operable nut swiveled to said base for moving the work to various angular positions of adjustment.

3. In a work supporting fixture for a drill press, a base adapted to be affixed to the bed of said drill press, a plate rockably and adjustably secured to said base on the upper face thereof adjacent one end thereof, said base being pro,- vided with a protractor scale adapted to cooperate with a pointer on said plate to indicate various angular positions of adjustment, means for clamping a work piece on said plate and manually operable screw and nut adjusting means for moving said plate to various positions of angular adjustment mounted on the upper face of said base adjacent the opposite end thereof.

4. In a work supporting jig and fixture for a drill press, a base adapted to be bolted to the bed of a. drill press, a plate rockably mounted at 5 one end of said base on the upper face thereof, a shaft adjustably supported on said plate for receiving a round work piece, means on said shaft for removably clamping said work piece in position beneath the tool of said drill press, a protractor scale and pointer on said base and plate adapted to cooperate to indicate various angular positions of adjustment of said plate and manually operable screw and nut adjusting means mounted on the upper face of said base adjacent the opposite end for connecting said bed and plate to change the angular position of said work piece.

5. In a drill press jig and fixture, a base adapted to be bolted to the bed of a drill press, a plate rockably mounted at one end of said base on the upper face thereof, a protractor scale and pointer on said base and plate respectively adapted to cooperate one with the other to indicate various angular positions of said plate, a shaft adjustably secured to said plate and arranged with its axis normal thereto adapted to support a round work piece having a central opening for receiving said shaft, a clamping disk on the outer end of said shaft for clampingly engaging said work piece, an actuator shaft pivoted to said plate at one of its ends and having its opposite end threaded for a portion of its length, a manually operable control sleeve connected to the upper face of the base at the opposite end of said base and having an internally threaded bore for receiving said threaded shaft and a trunnioned journal mounted on said base for receiving and supporting said control sleeve.

CHARLES SPERLING.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 134,296 Libbey Dec. 24, 1872 20 1,060,574 Anderson May 6, 1913 1,409,343 Karasick Mar. 14, 1922 2,240,977 Bryant et a1 May 6, 1941 

